Mechanism for drawing rovings of wool and other textile fibers.



F. GASABLANCAS.

ROVIN-GS 0F WOOL AND OTHER TEXTILE FIBERS. 'APPLICATION FILED MAY 14, 1912.'

MBcHANisM FOI'SDAWING z SHEETS-SHEET v1. 7

Patented Nov. 25, 1913.

P. GASABLANCAS.'

EXI'ILB FIBERS.

MEGHANISM FOR DRAWING ROVINGS 0F WOOL AND OTHER T APPLICATION FILED MA 14, 1912.

Patented Nov. 25, 1913.

2 SHEETS-SHEET 21 v 79 70 Jmfz r I I 1 a @e f, y f r @0m95- UNTTED sTATEs PATENT oEEicE. A

FERNANDO CASABLANCAS, OF SABADELL, SPAIN.

MECHANISM FR DRAWING OVINGS OEWOOL AND OTHER TEXTILE FIBERS.

Specication of Letters Patent.

Application led May 14, 1912. Serial No. 697,185.

exact description of the invention, such asA will enable others skilled in the artl to which it appertains to make and use the same.

This invention relates to mechanism for drawing rovings of wool and other textile fibers and consists in the constructions, a-rrangements, and combinations of parts hereinafter described and claimed'.

It is an object of .my invention to provide a device of the above character having improved drawing means and so located with reference to the other separate mechanisms on the roving frame, with whichit operates in combination, as to provide drawing through a lrelatively extended length of the twisted roving in short drafts at high speeds.

In describing my invention in detail ref-A erence will be had to the accompanying drawing wherein like symbols refer to like or corresponding parts throughout the several views, and in whichV Figure 1,is a diagrammatic view of the vvarious mechanisms ofthe improved roving frame. Fig. 2 is a sectional view of my improved drawing mechanism. Fig. 3 is an elevation of thel same. Fig. 4 is a top plan view of the same.. Fig. 5 is a detail view of the drawing rollers; and Fig. v6 is an enlarged detail of one of the rollers.

Referring more particularly to the drawing, 1 designates the feeding rollers for receiving the sliver or roving 2 and passing the same on through the Hier or twist-ing tube 3 to the delivery roller 4, whence the roving is carried to the bobbin on the spindle as illustrated and as will be understood. In accordance with the principle of my invention the drawing rollers, hereinafter to be described in detail, are loc'ated'between the feeding and delivery rollers and in advance of the flier 3. This arrangement of mechanisms permits a relatively extendedv and 10 mounted respectively on parallel shafts and 9 which are rotated in opposite direction by any suitable means.v Each yof the sleeves 6 and 10 is provided with a plurality of sectors 7 and 11 projecting preferably in diametrically opposite directions, the sectors being narrow and having a minimum surface contact. The sleeves 6 and 10 are adjustable radially so as to vary the contactsurfaces as hereinafter explained, but have sufficient frictional engagement with Patented Nov. 25,'1913.

their shafts 5 and 9 to rotate with the same.

The sectors are preferably faced with metal; however, they may be provided with dovetaile'd ,slots 21, as shown in Fig. 6, for the reception of the leather or other tips 8.

Supported by suitable standards adjacentthe shaft 9 is a shaft 18 to which is hinged opposite sections 13 and 14 of a two-part casing for inclosing the drawing rollers, from the lower section 13 of which projects a slotted arm 15 engaged by a bolt 16 for supporting the casing from the framework 17: The casing is dust-excluding andreceives accumulations of nap which adheres to the sectors from Contact with the roving and 1s removedV from the same by the 'prevent the same entering between the drawing rollers. This arrangement is utilized to advantage when, after a breakage, the rovingis tied and it is not desired to subject the weakened portion to the severe action of the drawing rollers.- The roving is permitted to run on the bow 20 and drawn by the delivery rollers 4, until the weakened portion being carried past the latter, the

operator may, by a movement of the finger,

cause the roving to be disengaged from the.

bow, whereupon, due to the inclination of the casing and guided by the bow, the same will enter theslot 19 and resume its position between the drawing rollers.

In the operation of my improved roving frame the delivery rollers 4 are to have a speed proportionately greater than the feeding rollers 1 whereby to effect drawing in the event of 'breakage as -above described, and also not to permit an excess of slack between `theflier 3 and the drawing rollers. The latofthe sectors are very small and having wide circumferential spaces between them allow longer intervals for the twisting, the severe action is, unproductive of an increased number of breaks, and the strains produced during the drawing operation are taken up by the` elasticity of the Aroving which is permitted by the slack constantly present in rear of the drawing rollers due to the inferior speed o-f the delivery rollers.

I have described 'preferred and satisfactory constructions but desire it to be understood that slight changes may be resortedto without departing frofm the spirit of my invention provided such changes fall Within the scope ofthe appended claims,l

I claim:

1. 'I a roving frame, feeding rollers, de- A livery rollers operat-ing at a relatively 'greater speed than said feeding rollers, a

flier for imparting the required twist to the roving, and drawing rollers operating. at a relatively greater speed than said delivery rollers and located between said feeding and.

delivery rollers in proximity to the latter providing an extended length of roving subjected to drawing, and a relatively short space between 'said drawing and delivery rollers to accommodate the slack.

2. In-a roving frame, feeding speed than said feeding rollers, a iiier for imparting the required twist to the roving, and drawing rollers operating at a relatively greater speed than said delivery rollers and provided with diametrically opposed sectors -of minimum surface contact engaging with 3. In a roving frame, feeding and delivrollers, de; livery rollers operating at ai relatively greater4 ery rollers, a ier for imparting the required twist to the roving, and drawing rollers provided with adjustable sectors for varying the duration of contact with the roving.

4. n a roving frame, feeding and delivery rollers, a flier for imparting the required twist to the roving, and drawing mechanism located between said feeding and delivery rollers andcomprising a pair of oppositely' rotating parallel shafts, adjustable sleeves' mounted to turn with said shafts, and a plurality of cooperating sectors projecting from said sleeves and engaging with the roving to draw the same.

5. In a roving frame, feeding rollers, de-

speed than said feeding rollers, a flier for imparting the required twist to the roving, and drawing mechanism operating at a relatively greater speed than said delivery rollers and located between said feeding and delivery rollers in proximity to the latter providing an extended length of roving subject to drawing and a relatively short space between said drawing anddelivery rollers to accommodate the slack, said mechanism comprising a pair of oppositely rotating parallel shafts, adjustable sleeves mounted to turn with said shafts, and a plurality of coperating sectors projecting from said sleeves and engaging with`the roving to draw the same.

6. In a roving frame, feeding and delivery rollers, a flier for imparting the required twist to the roving, drawing mechanism lorality of cooperating sectors on said sleeves for engaging the roving, a casing for housing said mechanism provided with a slot adapted to admit the Iroving, and a bow supported at .one end on the casing and bridging the slot.

In testimony whereof, I aix my signature, in presence of two witnesses.

FERNANDO CASABLANGAS.

lVitnes'ses CoNsTAN'riNo SUPER CIEL, NAnoiso J UBERT.

' livery rollers operating at arelatively greater y 

